The dreams of the blind: in consideration of the congenital and adventitously blindness

A method for the separation of a hydrogen-containing hydrocarbonaceous reaction zone effluent accompanied by hydrogen enrichment of a recycled gaseous phase. The method involves the technique of cooling and partially condensing the effluent material emanating from a hydrocarbon reaction zone with introduction thereof into a vapor-liquid separation zone. A first vaporous phase is compressed and introduced upwardly into a contacting-condensation zone wherein the vapors countercurrently contact a descending stream of cooled fractionation zone liquid bottoms material. Partial condensation and selective absorption of the upwardly flowing vapors is effected with hydrogen enrichment of the vaporous phase withdrawn from the upper portion of the contacting-condensation zone. The liquid phases from the vapor-liquid separation zone and the contacting-condensation zone are admixed and introduced, at elevated pressure into a fractionation zone. A portion of the liquid bottoms material recovered from the fractionation zone is cooled and introduced into the contacting-condensation zone to contact countercurrently the upwardly flowing vapor phase therein.